EP 0397464 B1 19931124 - Silicon nitride sintered bodies and method of manufacturing the same.
Title (en)
Silicon nitride sintered bodies and method of manufacturing the same.
Title (de)
Siliciumnitrid-Sinterkörper und Verfahren zu ihrer Herstellung.
Title (fr)
Corps frittés en nitrure de silicium et leur procédé de fabrication.
Publication
Application
Priority
- JP 11063390 A 19900427
- JP 11496589 A 19890510
Abstract (en)
[origin: EP0397464A1] Silicon nitride sintered bodies are disclosed which contain rare earth element compounds and silicon carbide, and in which the intergranular phases between the silicon nitride particles are substantially crystallized. To make such sintered bodies, rare earth element oxides and a silicon carbide powder raw material are used as additives when preparing raw powders and the intergranular phases are crystallized during a temperature descending stage following a firing. The silicon carbide achieves effective densification of structure of the sintered body and crystallization of the intergranular phases, thereby making it possible to provide sintered bodies having intergranular phases with little glass phase uncrystallized and having excellent high-temperature strengths.
IPC 1-7
IPC 8 full level
C04B 35/584 (2006.01); C04B 35/593 (2006.01)
CPC (source: EP US)
C04B 35/584 (2013.01 - EP US); C04B 35/5935 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0397464 A1 19901114; EP 0397464 B1 19931124; CA 2016336 A1 19901110; CA 2016336 C 19961029; DE 69004735 D1 19940105; DE 69004735 T2 19940511; US 5177038 A 19930105
DOCDB simple family (application)
EP 90304980 A 19900509; CA 2016336 A 19900509; DE 69004735 T 19900509; US 52156790 A 19900510